<template>
  <div class="icons">
    <swiper :options="swiperOption">
      <swiper-slide v-for="(page, index) of pages" :key="index">
        <div
          class="icon"
          v-for="item of page"
          :key="item.id"
        >
          <div class='icon-img'>
            <img class='icon-img-content' :src='item.imgUrl' />
          </div>
          <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>
<script>
export default {
  name: 'HomeIcons',
  props: {
    list: Array
  },
  data () {
    return {
      swiperOption: {
        autoplay: false
      }
    }
  },
  computed: {
    // 数据的分页
    pages () {
      // 页码数组
      const pages = []
      this.list.forEach((item, index) => {
        // 页码
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl';
@import '~styles/mixins.styl'
.icons >>> .Swiper-container {
  // 宽高比2：1
  //overflow: hidden;//swiper自带该属性
  height: 0;
  padding-bottom: 50%;
}
.icons
  margin-top: .2rem
  .icon {
    position: relative;
    float: left;
    height: 0;
    width: 25%;
    padding-bottom: 25%; // 等同于宽高都是25%

    .icon-img {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0.44rem;
      box-sizing: border-box;
      padding: 0.1rem;

      .icon-img-content {
        display: block;
        margin: 0 auto;
        height: 100%;
      }
    }

    .icon-desc {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 0.44rem;
      line-height: 0.44rem;
      color: $darkTextColor;
      text-align: center;
      // ...
      elipsis()
    }
  }

</style>
